Home / 12,178.14-18,261.78-4,776.90

Finding the Fourth Proportional to 12,178.14, 18,261.78 and 4,776.90

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Solution

The fourth proportional to 12,178.14, 18,261.78 and 4,776.90 is: 7,163.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,178.14 : 18,261.78 = 4,776.90 : x
  2. Step 2: Convert to fraction form
    12,178.14/18,261.78 = 4,776.90/x
  3. Step 3: Cross multiply
    12,178.14x = 18,261.78 × 4,776.90
  4. Step 4: Simplify right side
    12,178.14x = 87,234,696.88
  5. Step 5: Solve for x
    x = 87,234,696.88/12,178.14
  6. Step 6: Final answer
    x = 7,163.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.